A car travels the first one-third of a certain distance with a speed of `1 0` `km//h`, the next one-third distance wi

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Q 1689101917.     A car travels the first one-third of a certain
distance with a speed of `1 0` `km//h`, the next
one-third distance with a speed of `20` `km//h` and
the last one-third distance with a speed of
`60` `km//h`. The average speed of the car for the
whole journey is
CDS 2015 Paper-1
A

`18` `km//h`

B

`24` `km//h`

C

`30` `km//h`

D

`36` `km//h`

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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